In one part of the upper reaches of the Madison River, a whole mountain began shifting, then came crashing down to fill the deep valley and dam the great fiver with millions of tons rock and trees.是什么意思_In one part of the upper reaches of the Madison River, a whole mountain began shifting, then came crashing down to fill the deep valley and dam the great fiver with millions of tons rock and trees.在線翻譯_英語_讀音_用法_例句